universe.pptx
- 2. AGENDA • Origin of universe • Dark matter • Nebula • Black holes • Multi-universe • Comets 2
- 3. The universe The universe is made up of : • Ordinary visible matter (stars , planets and inter-galactic gas):0.4% • Normal non-luminous matter (black holes , inter galactic gas :3.6 % • Dark matter :21% • Dark energy:75 % PRESENTATION TITLE 3
- 5. Origin of universe • In 1948 George Gamow proposed that the universe was created , after the large explosion , the Big Bang . • The theory explains that 13.7 billion years ago , all matter in the universe was concentrated in a very small area. • When the explosion occurred , the matter was propelled in all directions . • Consequently, the matter was concentrated in certain areas of space , leading to the first stars and galaxies . Since then , universe is evolving. 5
- 6. CONFIRMATION OF BIG BANG: • Cosmic background radiations: • Studying a very sensitive microwave receiver , scientist realized there was strange radiation coming from all points in space. • It is electromagnetic radiation that fills the universe. cosmic background is radiation left over from early developmen of universe and it is the proof of big bang theory. • Cosmic microwave radiations is glow of the big bang and microwave come as result of expansion of universe , which shows that it had beginning.
- 7. EVOLUTION OF UNIVERSE ACCORDING TO BIG BANG THEORY: 7
- 8. EVOLUTION OF UNIVERSE ACCORDING TO BIG BANG THEORY
- 9. EVOLUTION OF UNIVERSE ACCORDING TO BIG BANG THEORY
- 10. DARK MATTER AND DARK ENERGY 10
- 11. DARK MATTER: It constitute 21 % of universe ,we don’t know its composition because : • It cant be seen. • It doesn’t reflect and emit light or radiation. Its behavior is same as gravitational normal matter.
- 12. DARK MATTER:
- 13. DARK ENERGY :
- 14. DARK ENERGY
- 16. BLACK HOLES
- 18. 9/3/20XX 18 PRESENTATION TITLE THANK YOU Presenter name Email address Website